断层破碎带的建模方法和意义  

Method and significance of modeling for fractured fault zone

作　　者：李少华[1,2] 王利[1,3] 王军[4] 李君 

机构地区：[1]长江大学地球科学学院,湖北武汉430100 [2]非常规油气湖北省协同创新中心,湖北武汉430100 [3]中国石油吉林油田分公司,吉林松原138000 [4]中国石化胜利油田分公司地质科学研究院,山东东营257015 [5]长江大学地球环境与水资源学院,湖北武汉430100

出　　处：《断块油气田》2014年第4期409-412,共4页Fault-Block Oil & Gas Field

基　　金：国家自然科学基金项目"点坝砂体内部非均质性的层次建模法"(41272136);国家科技重大专项课题"储层内部结构建模软件研制"(2011ZX05011-001)

摘　　要：在露头中观测到的断层通常显示为一个破碎带,而在地质建模中,断层被简化成一个面,因此无法对断层破碎带进行有效表征。为此,文中提出了一种新的断层破碎带建模方法:用2个断层面表示断层破碎带的2个边界,断层面之间的距离由断层破碎带的范围决定,2个断层面所圈定的部分作为断层破碎带。在断层破碎带内部,将其中的断面充填物与裂缝带分别表征,由此可以表示充填物与裂缝带的不同组合模式。新的建模方法既较好地表征了断层破碎带内部结构,又更好地体现了断层封堵性,能够建立更加符合地质实际的断层模型。The fault observed in the outcrop usually appears as a fractured zone.However,fault is simplified as a surface when geology modeling is made,so fractured fault zone cannot be characterized effectively.Based on this situation,we propose a new method.Two fault surfaces are used to represent the two boundaries of fractured fault zone and the distance of the two surfaces is determined by the extent of a fractured fault zone,so the restricted area by the two surfaces is regarded as a fractured fault zone.In the inner of fractured fault zone,the fault fill and fracture zone are characterized independently,which can characterize the various composite modes of fault fill and fracture zone.The proposed modeling method not only characterizes the structure of fractured fault zone,but also reflects the sealing characteristics of fractured fault zone,which can construct a fault model that will be more consistent with the actual geology phenomena.

关 键 词：断层破碎带 地质建模 储层 封堵性 

分 类 号：TE121.15[石油与天然气工程—油气勘探]